Concrete pipe construction



May M, 19535- B. J. UKROPINA Zm@ CONCRETE PIPE CONSTRUCTION Filed July 21, 1933 2 sheets-sheet 1 3 v INVENTOR.

E, J. UKROPINA OLM-Z CONCRETE PIPE CONSTRUCTION Filed July 21, 1935 2 sheets-Sheet 2 v M2 /22 /25 n Z//fRoP//l/H.

` `Patented Mayl14, 1935 I PATENT OFFICE CONCRETE rIPE CONSTRUCTION Bozidar J. Ukropina, Los Angeles, Calif. Application July 21, 193s, seriaiNo. 681,552

6 Claims.

This inventionrelates. to improvements in concrete pipes. e

The general object of the invention is to prvide an improved joint for connecting two lengths of pipe. e I v Another object of the invention is to provide a. joint `construction including novel packing means for connecting two lengths of concrete pipe. d l()k `Other objects and the advantages of this invention will be apparent from the following description taken in connection with the accompanying drawings wherein:

Fig.` 1 is a side elevation of a length of cone crete pipe embodying the features of my invention. i

Figfz isa side elevation of a collar member used in formingmy improved joint;

Fig. 3 is an `"enlarged fragmentary section throughtwo lengths of the pipe shown in Fig. 1 showingv my1 improved: joint construction.

Fig. 4 is a fragmentary view similar to Fig. 3 showing a collar in position on one of the pipes;

Fig. 5 is a view similar to Fig. 3 showing the pipe and` Collar constructed to form an. inside joint instead of an outsidejoint as shown in 3Eig..3;` i

Fig.. 6 is a view similar to Fig. `3 showing a modified form of construction; f

Fig. 7 is a fragmentary section `through two lengths of concrete pipe showing a modified form of `pipe and joint construction; d

`Fig. 8 is a view similar to Fig. '7 showinga further rnodiiied` form; A

Fig. 9 is a fragmentary section through two lengths of concrete pipe showing a modified form of pipeand joint construction and Fig. l0 isa view similar to Fig. 9 showing a further modified form of joint. e p

Referring to the drawings by reference characters, I have indicated a length of my improved concretepipe generally at I0. As shown the pipe I0 comprises a metal reinforcing cylinder I2 e embedded between an outer layer of concrete I3 and an inner layer of concrete I4. `Adjacent each end of the cylinder I2 I provide a metal ring I5 whichis triangular'` in cross section and which y surrounds the cylinder I2 at a distance spaced from the adjacent end of the cylinder I2 by spot e welding as indicated at I6. The outer layer of concrete I3 terminates at each end in a beveled surface I I which intersects the inward face of flush with the end of the cylinder I2 as at I8 and` at the opposite end both the concrete andthe cylinder end are beveled as indicatedat I9.

`Whenjoining two lengths of the pipe I0 I employ a collar member which I have indicated generally at. and `have shown inelcvation in 5 Fig. 2. As shown the collar member 2i] comprises a metal band .2| yhaving a ring of concrete 22 thereon. `'lheyiiner diameter of the collar 20 f corresponds approximately to that of the outer diameterl of the pipe rings I5' and the outer di.- ameter of the collar preferably corresponds to the outer diameter ofthe pipe. Eachend face 0f the collar 20 is beveled as at `23 to correspond tothe beveled endsV I'I of the pipe.

In forminga joint between two lengths of pipe III the collar 20 is positioned over the .ring I5 at one end of the pipe with the end face 23 of the collar abutting. the end face Il of the pipe. When the collar 20 is in this position a space is left between the collar band 2| and the pipe cyl-k inder I2 which is filled with a caulking material 24 such as lead 4wool (see Fig. 4) The collar 2li may be placed on the pipe and the caulkirig 24 placed in position atthe place of manufacture if desired. The caulkirig material 24 is driven tightly against the ring I5 and extends to approximately flush with the adjacent end of the pipe cylinder I2. f

After the collar 2l] has been positioned on one pipe and the caulking material 24 placed in posid tion one end of another length of pipe Ii] is placed in the collar 20. The two lengths of pipe are positioned so that, theend I8 of one faces the end I9 ofthe other. When the second pipe has been. positioned in the collar 20 so that the face il of the pipe abuts the face 23 of the collar a chamber 25 is left between the adjacent ends ofl the two pipe lengths and a space is left between the collar lband 2| and the cylinder I2 of the second pipe which is filled with a caulking Amaterial 26 such as lead wool. The caulking 26 like the ycaulking 24 is tightly driven against the ring llof the second pipe and extends to approximately flush with the end I9 of its associated pipe. After the caulking material 2G has been placed in position a filling material 2'! such as cement mortar is positioned in the chamber 25.

In Fig. 5 I have indicated generally at 28 two lengths of joined concrete pipe wherein the elements of construction have been reversed to form an inside joint instead of an outside joint as shown in Fig. 3 and wherein similarlyprimed reference numerals indicate portions corresponding to the portions in Fig. 3.

K In Fig. 6 I have indicated a slightly modied 55 form of pipe construction generally at 30 and a collar generally at 3 l. As shown the pipe 30 comprises a reinforcing metal cylinder 32 embedded between an outer layer of concrete 33 and an inner layer of concrete 34. The outer layer of concrete 33 at each end is set back from the adjacent end of the cylinder 32 and terminates in a beveled face 35. Adjacent each end of the cylinder 32 I provide a triangularly shaped metal ring 35 which surrounds the cylinder-intermediate the end thereof and the face 35 of the outer layer of concrete. The rings 36 are preferably secured to the cylinder 32 by spot welding them thereto as indicated at 31. The inner layer of concrete 34 at one end terminates in a plane face iiush with the adjacent end of the cylinder kas at 38 and at the opposite end both the concreteY and the cylinder end are preferably beveled as at 39.

As shown the collar 3l comprises a metal band 49 having a ring of concrete 4I thereon. The opposite ends of the band 46 are curved outwardly as indicated at 42 and the .ends of the concrete terminate flush therewith. The inner diameter of the collar 3l corresponds approximately to the outer diameter of the pipe rings 31 and the outer diameter of the collar preferably corresponds to the outer diameter of the pipe, To form a joint between two lengths of the pipe 30 the collar 3l is positioned over the ring 36 at one end ofthe pipe, for instance, the end I9, leaving a space 43 between the pipe face 35 and the adjacent end of the collar.l When the collar 3l is thus positioned on the pipe a space is left between the collar band 4l and the pipe cylinder 32 in which a caulking material 44 such as lead wool is positioned. The caulking 415 is tightly driven against the pipe ring 36 and extends to approximately iiush with the adjacent end of the pipev cylinder 32.

After the collar 3| has thus been positioned on one pipe length the end 38 of another length of pipe 39 is positioned in the collar leaving a space 45 between the face 35 of the second pipe and the adjacent end of the collar. second pipe has been positioned in the collar a chamber 46 is left between the adjacent ends of the two pipes and a space is left between the collar band 40 and the cylinder 32 of the second pipe. In this space I place caulking material 41 such as lead wool. The caulking 41 like the caulking 44 is tightly driven against the ring 36 of the second pipe and extends to approximately iiush with the end 38 of its associated pipe.

After the caulking material 41 has been placed in position a ll material 48 such as cement mortar is positioned in the chamber 46 and a similar ll material 49 is. positioned in the spaces 43 and 45.

The construction of the pipes and collar shown in Fig. 6 may be reversed to form an inside joint instead of an outside joint as previously described in connection with the reversed structure of Fig. 3, as shown in Fig. 5. 4 In Fig. '1 I have indicated another modified form of cement pipe construction generally at 50. As shown the pipe 59 comprises a metal rein- A forcing cylinder 5l embedded between an outery layer of concrete 52 and an inner layerof concrete 53. At one end the inner layer of concrete 53 terminates in a plane face ush with the end crete are beveled as at 55. Adjacent the end of When the the pipe 54 I provide an annular triangularly shaped metal ring 56 and adjacent the end of the pipe 55 a similarly shaped metal ring 51. Both the rings 56 and 51 surround the cylinder 5I a distance inward from the adjacent ends of the cylinder and are secured thereto by spot welding as indicated at 56. Spaced from and surrounding the end portion or" the cylinder at the pipe end 54 I provide a metal band 59 the inner surface' of vwhich engages the outer surfaceof the ring56. v The ring 59 extends outward beyond the adjacent end of the cylinder and is ilared outwardly as indicated at 60. The outer layer of concrete 52 overlays the band 59 and terminates iiush with the outer end-thereof as at 6l while at the opposite end it terminates in a beveled face 62 positioned inward from the ring 51. Embedded in the outer layer of concrete 52 I preferably provide a metal reinforcing cage 63 which at one end is secured as at 64 to the band 59 as by Welding and at the opposite end terminates inward from the end 62. f

Positioned in the space between the cylinder 52 and the band 59 I provide a caulking material G5 such as lead wool. The caulking 65 is tightly driven against the ring 56 and extends to approximately flush with the adjacent end of the cylinder.

When joining two lengths of pipe 50 the end 55 of one 'pipe is arranged within lthe band 59 of the other pipe at a position wherein a chamber 66 is left between the adjacent ends of the two lengths of pipe. Inthis'position 'the inner surface of the band 59 of the first pipeengages the outer surface of the ring 51 and extends therebeyond'a short distance leaving a space 61 between the end 6I ofthe rst'pipe and the end 62 of the second pipe. y Acaulking material 68 such as lead woolis then positioned in the space between Vthe band 59 'of the ilrstpipe and the cylinder 52 of the second pipe. y

The caulking 68 is tightly driven against the ring 51 of the second pipe and extends to approximately flush with the adjacent end of the second pipe cylinder. After the caulking 68 has been placed in position a lling material 69 such as cement mortar is positioned in the chamber 66 and a similar filling material 1i) is positioned in the space 51. f

In Fig. 8 I have indicateda further modified form of cement pipe construction generally at 1|. As shown the pipe 1| 'comprises' a metal reinforcing cylinder 12 embedded'between layers'of concrete 13 and'14. At one end the inner layer of concrte 13 terminates in a plane face 15 ilush with the adjacent end of the cylinder v12 while at the opposite end both the' end of the cylinder and the concrete are beveled as at 16.

Adjacent the end 15 of the pipe I provide a metal bell ring 11 which surrounds a portion of the cylinder 12 and is spaced therefrom. The outer end of the bell ring"v 11 extends outward beyond the adjacent end of the cylinder where it is flared outwardly v'as indicated at 18. The inner end of the bellring 11 extends inward from the adjacent endfof the cylinder and includes an inwardly beveledportion 19 which engages the cylinder 12 andis secured thereto ask by spot welding as indicated at 80. Adjacent the pipe end 16 I provide a triangularly shaped metal ring 8l which surrounds the cylinder 12 a distance inward from the adjacent end'thereof and 'is secured to the cylinder by spot welding as indicated at 82. The outer layer of concrete 13 `overlays the ouL so l

with tlieadjacent end of the cylinder. When joining two lengths of pipe 50`the end 16 of one pipe is arranged within the bell ring `11 of the other -pipe at ai position wherein achamber `86 is left between the adjacent end offpipe sections.'

In this position the" inner surface of the bell ring `'i of the iirst pipe engages the outer sur` face `of the ring 8|"ofthe secondpipe and'extends therebeyond a short 'distanceleaving al space 01Y between the end 83 ofthe first pipe and the end 04 of the second pipe. A caulking material 88 such as lead wool is then positioned inthe space between the bell ring 11 of the first pipe and the cylinder 12 of `the secoridlpipe.` This caulking 80 isrtightly driven against the ring 8| of the second pipe and extendsfto approximatelyl flush with `the adjacent end of3 the cylinder 12 thereof.' Afterthe caulking 88 has beenplaced in position `a filling material 89 such as cement mortar is positioned inthe chamber Manda` similar iilling material 90 ispositioned in the space 81. o 1

i In Iig. Q'Ihave indicated another modified form of cement pipe construction vgenerally at 9|. As shown the pipe 9| Vcomprises; av metal reinforcing cylinder 92whichis embedded between an outer layer of concrete 93' andan inner layer ofconcrete94. At one end the inner layer of concrete 14 `terminates ,ina plane: face 95 iiush with `the adjacent end` ofthe cylinder 9| while at the olziposite'end` both the end of the cylinder andthe concrete are beveled as indicated at 96. l

` At the end 95 ofthe pipe` the outer layer of concrete 93 is set back from the adjacent end of the cylinder and is beveled as at 91. Extending outwardly fromthe beveled face .91 adjacent the cylinder `9| I. provide a reduced flange portion 98 formed integral` withY the concrete 94. At the opposite end of the pipe the outer layer of concrete 94 is set back from the adjacent endrof the cylinder and terminates in a beveled face 99.

In forming a joint betweeny two lengths of pipe `9| `a collar member `indicated generally at |00 is employed. As shownthe collar member comprises a metal band |0| having a ring, of

concrete |02 thereon. 'Iheopposite Vendportions. of the collar band are :lcurved` inwardly as indicated at |03 and the concretel|02 terminates.

flush with the ends of the band and are beveled outwardly as at |04; The inner diameter ofthe intermediate portionof the collar band |0I is of greater diameter thanvthe outside diameterof the pipe cylinder` 9| while the innermost `diameter of the curved portions |03 of the collar band 1 arelapprcximately the same` as the outer diamof one length of `pipe with` oneV of its end faces |04 abutting the face 91 of thepip'e.` lA caulking material |95 such as lead wool isthen positioned in the space betweenthe pipelcylinder 9| and the Vcollar band |03.

The caulking |08 is tightly driven against the pipe ange 98 and the adjacent curved `end of the collar band andextendsf approximately iiush with the adjacent end of the cylinder 9|.4

When joining two lengths of pipe 9| the' end 96 of one pipe is arranged within -the collar |00 at a location wherein the end99 ofthe second pipe abuts the end |04 of the collar |00. In this` position a chamber |09 is left between the adjacent ends of the pipe sections. A caulking ma teral ||0 such as lead Wool is then positioned in the space between the collar band |0| andthe cylinder 9| of the second pipe. `The caulking l I0 is tightly driven against the end face 99 of the second pipe and extends to approximately flush with the adjacent endof the cylinder of the second pipe. 'After the caulking material` l l 0 is placed in position a filling material such as cement mortar is positioned in the chamber |09.` In Fig. 10 I have indicated a stillfurther modi-r fied form of cement pipe construction generally at ||-2. As shownlthe pipe ||2 comprisesa metall reinforcing cylinder ||3 embedded between an' outerY layer of concrete l! 4 and an inner layer of concrete H5. `At eachfend the cylinder'll3 is flared outwardly as indicated 'ati ii.- .Theinner layer of concrete ||5 at` oneend terminates in a plane face flush with the'adjacentend of 4the cylinder lland at theiopposite end ter-` minates ush with the adjacent end of the cylinder and is beveled inwardly as at H8.` At ythe end IH of the pipe theouter layer of vconczrete H4 is set back'from the adjacent end-ofcthe cylinder H3 and is beveled .as at H3. v Y Extending `outwardly from the beveled facel 9 adjacent the cylinder ||1 I provide a reduced flange portion formed integral with the concrete H4. `At the opposite end the outer layer of concrete is set back from the adjacent end of the cylinder and terminates in a beveled face l2 l. In forming a joint between two lengths of pipe H2 a collar member |22 is employed. This collar is similar to the collar |00 shown in Fig., 9 `and comprises a metal band |23 havingaring of concrete |24 thereon. The opposite end portions of the collar band |23 are curved inward as indicated at |25, and the concrete |24 terminates iiush with the ends of the band and are beveled outwardly as at |26. l The inner diameter of the intermediate portion of the collar band |23 is oi' greater diameter than the outside diameter of the pipe cylinder H3 whilethe innermost diameter of the curved portion `|25 of the collar band is approximately the same diameter as the outside diameter of the pipe flange |20. The out-` side diameter of the collar |22 is preferably the same as the outside diameter of the pipe.

The collar |22 is positioned over the end |I1 of one length of pipe with one of its end `faces |26 abutting the faces H9 of the pipe. A caulking ,material |21 is positioned in the space between the pipe cylinder H3 and the collar band |23. The caulking extends from the face H9 of the pipe to the outwardly flared end H6 of the pipe cylinder. When joining two lengthsof pipe ||2 the end .I I8 of one pipe is positioned within,

the collar |22 to a position wherein the end H9 of the second pipe abuts the end` |20 of the collar. In this position a chamber |28 is leftbetween the adjacent ends ofthepipe. Acaulking material |29 is positioned in the space` between the collar band |23 and the cylinder H3 of the second pipe which extends from the-face |2| of the second pipe to the outwardly iiared end. i l5 thereof. The caulkingmaterials |21 and |29 are preferably made of a resilientV material such as a rubber composition. After the caulking materials |21 and |29 are placed in position a lling material |30 such as cement mortar is positioned in the chamber |28. f

When the pipe line comprising a plurality of sections of the pipe ||2 contracts the caulking materials |21 and |29 are compressed between the ends I6 of the pipe cylinders and the curved end portions |25 of the collar bands.

From the foregoing description it will be apparent that I have provided a novel concrete pipe construction and joint therefor which is simple in construction and highly eii'lcient in use.

Having thus described my invention, I claim:

1. A conduit comprising a plurality of lengths of concrete pipe each having a metal reinforcing cylinder embedded therein which includes end portions, said lengths being laid end to end with a chamber therebetween, an annular metal band on the end portions of said cylinders and spaced from the adjacent ends thereof, said bands being triangular in cross section with the bases there-l of engaging said cylinders and secured thereto,A collar members each of said collars including a metal band having a ring of `concrete thereon, said collar members surrounding the adjacent projecting portions of said pipe cylinders and arranged over said pipe bands, caulking material positioned in the spaces between said pipe cylinders and said collar bands, said caulking material extending from said pipe bands to the adjacent ends of said cylinder and iilling material positioned in said chambers between the adjacent ends of said pipe.

2. A conduit comprising a plurality of lengths of concrete pipes laid end to end, each of said lengths including a metal reinforcing. cylinder embedded between an outer and an inner layer of concrete, an annular metal band positioned on said cylinder adjacent each end thereof, said bands being spaced inward from the adjacent ends of said cylinder, a metal bell ring adjacent one end of said lengths, said bell ring surrounding the adjacent band and extending outward beyond the adjacent end of said cylinder, the outer end of said bell ring being ilared outwardly, said lengths being positioned with the bell ring of one length surrounding the end of the other length with a chamber between the adjacent ends of said inner layers of concrete of said lengths and a chamber between the adjacent ends of.

said outer layers of concrete, said bell ring being.

positioned over said pipe band of the other length, a caulking material positioned in the space between said bell and its associated cylinder, said caulking extending from said triangular band to the adjacent end of said cylinder, a second caulking material, said second caulking material being positioned in the space between said bell ring and said cylinder of the other of said lengths, said second caulking extending from the triangular band of said other length to the adjacent end of said pipe cylinder, a filling material positioned in said chamber between the adjacent ends of said inner layers of concrete and a filling material positioned in said chamber between the adjacent ends of said outer layers of concrete.

3. A conduit comprising a plurality of lengths of pipes each of said lengths including a metal reinforcing cylinder embedded between an outer and an inner layer of concrete, said inner layer of concrete at one end terminating flush with the adjacent end of said cylinder and the opposite end of said inner layer vof concrete together with the adjacent end of said cylinder being beveled inwardly, an annular metal band positionedv on the cylinders adjacent each end thereof, said bands being spaced inward from the adjacent ends of said cylinder, said bands being triangular in shape with their bases engaging said cylinder and secured to said cylinder, said outer layer of concrete at each end terminating in a beveled face intersecting the inner inward faces of said bands, said lengths being positioned with the plane end face of the inner layer of concrete of one length adjacent the beveled face of the inner layer of concrete of the other length with a chamber between the adjacent ends of said lengths, a collar member, said collar member including a metal band having a ring of concrete thereon, said collar surrounding the adjacent ends of said lengths with said collar band positioned over said triangular pipe bands, the opposed faces of said collar engaging the adjacent faces of the outer layers of concrete of said length, a caulking material positioned in the'space between the collar band and the cylinder of one of said lengths, the caulking extending-from said triangular band to the adjacent end of the cylinder, a'second caulking material, said second caulking material being positioned in the space between said collar band and said cylinder'of theother of said lengths, said second caullxingl extending from the triangular band of said other length to the adjacent end of said pipe cylinder, and a filling material positioned in said chamber between the adjacent ends of the lengths.

-41 A conduit comprising a plurality of lengths of concrete pipes laid end to end, each of said lengths including a metal reinforcing cylinder embedded between an outer and an inner layer of concrete, said inner layer of concrete at one end terminating ilush with the adjacent end of said cylinder and the opposite end of said inner layer of concrete together with the adjacent end of said cylinder. being beveled inwardly, an annular metal band positioned on said cylinder adjacent each end thereof, said lengths being positioned with the plane end face of the inner layer of concrete of one length adjacent the beveled face of the inner layer of concrete of the other length with a chamber between the adjacent ends of said lengths, a collar member, said collar member including a metal band having a ring of concretethereon, the opposite ends of said collar band being curved outwardly, said collar surrounding -the adjacent ends of said lengths with said collar band positioned over said triangular pipe bands, the opposed faces of said collar being spaced from the adjacent end faces of said outer layers of concrete of said lengths to form chambers therebetween, a caulking material positioned in the space between said collar band and said cylinder on one of said lengths, said caulking extending from said triangular band to the adjacent end of said cylinder, a second caulking material, said second caulking material being positioned in the space between said collar band and said cylinder of the other of said lengths, said second caulking extending from the triangular band of said other length to the adjacent end of said pipe cylinder, and a filling material positioned in said chamber between the adjacent ends of said inner layers of concrete of said lengths and lling material positioned in said chambers between the ends of faces of said collar and the adjacent ends of said outer layers of concrete.

5. A conduit comprising a plurality of length of being spaced inward from the adjacent ends of said cylinder, a metal bell ring adjacent one end of said length, saidbell ring overlaying the adja- `cent band and extending outward beyond the adjacent end of said cylinder, the outerend of said bell ring being flared outwardly, said outer layer of` concrete at one end terminating in a beveled face set inwardly from the inward face 2 `of said band, said outer layer of concrete at the `opposite end overlaying said bell ring and terminating flush with the outer end thereof, a metal reinforcing cage embedded in said outer layer of concrete, saidcage at one end being secured to said bell ring and at the opposite end terminating 'short of the end face of said concrete, said lengths being positioned with the bell ring of one length surrounding the plane end of `the other length with a chamber betweenlthe adjacent ends of said inner layers of concrete of said lengths, and a chamber between the adjacent ends of said j outer layers of concrete, said bell ring being positioned over said triangular pipe band of the other and a caulking material positioned in the space between said bell and its associated cylinder, said caulking extending from said band to the adjacent end of said cylinder( 6. A conduit comprising a plurality of lengths of concrete pipes laid end to end, each of said lengths including a metal reinforcing cylinder embedded between an outer layer and an inner layer of concrete, said inner layer of concrete at one end terminating ilush with the adjacent end of said cylinder and the opposite endy of said inner layer of concrete together with the adjacent end of said cylinder being beveled inwardly, anannular metal band positioned on said cy1inder adjacent each end thereof, said bands being spaced inward from thevadjacent ends of said cylinder, said bands being triangular in shape with their bases engaging said cylinder, a metal bell ring adjacent one end of said length, said bell ring surrounding the adjacent band and eX- tending outward beyond the adjacent end of said cylinder, the outer end of said bell ring being flared outwardly, said outer layer of concrete at one end terminating in a beveled face set inwardly from the inward face of said band, said lengths being positioned with the bell ring of one length surrounding the plane end of the other length with a chamber between the adjacent ends of said inner layers of concrete of said lengths, and a chamber between the adjacent ends of `said outer layers of concrete, said bell ring being positioned over said triangular pipe band of the other length, a caulking material positioned in the space between said bell and its associated cylinder, said caulking extendingfrom said triangular band to the adjacent end of said cylinder and a second caulking material, said second caulking material being positioned in the space between said bell ring and said cylinder of the other of said lengths, said second caulking extending from the triangular band of said other length to the adjacent end of said pipe cylinder.

i BOZIDAR J. UKROPINA. 

